package com.juzipi.demo.web.admin;


import com.juzipi.demo.pojo.Type;
import com.juzipi.demo.service.TypeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StreamUtils;
import org.springframework.util.StringUtils;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;
import java.util.Collections;
import java.util.List;

@Controller
@RequestMapping("/admin")
public class TypeController {

    @Autowired
    private TypeService typeService;

    /**
     * 跳转查看页面方便后面新增
     * @param pageable
     * @param model
     * @return
     */
    @GetMapping("/types")
    public String types(@PageableDefault(size = 10,sort = {"id"},direction = Sort.Direction.DESC) Pageable pageable, Model model){

        model.addAttribute("page",typeService.listType(pageable));

        return "admin/types";
    }

    /**
     * 跳转新增页面
     * @return
     */
    @GetMapping("/types/input")
    public String input(Model model) {
        model.addAttribute("type",new Type());
        return "admin/types-input";
    }



    @GetMapping("/types/{id}/input")
    public String editInput(@PathVariable Long id, Model model){
        model.addAttribute("type", typeService.getType(id));
        return "admin/types-input";
    }


    @PostMapping("/types")
    public String post(@Valid Type type, BindingResult result, RedirectAttributes redirectAttributes) {
        Type types = typeService.getTypeByName(type.getName());
        if (!StringUtils.isEmpty(types)){
            result.rejectValue("name","nameError","该分类已存在!");
        }

        if (result.hasErrors()){
            return "admin/types-input";
        }

        Type saveType = typeService.saveType(type);
        if (StringUtils.isEmpty(saveType)){
            redirectAttributes.addFlashAttribute("message","operation failed!");
        }
        redirectAttributes.addFlashAttribute("message","Successful operation!");

        return "redirect:/admin/types";
    }



    @PostMapping("/types/{id}")
    public String editPost(@Valid Type type, BindingResult result,@PathVariable Long id, RedirectAttributes redirectAttributes) {
        Type types = typeService.getTypeByName(type.getName());
        if (!StringUtils.isEmpty(types)){
            result.rejectValue("name","nameError","该分类已存在!");
        }

        if (result.hasErrors()){
            return "admin/types-input";
        }

        Type saveType = (Type) typeService.updateType(id,type);
        if (StringUtils.isEmpty(saveType)){
            redirectAttributes.addFlashAttribute("message","operation failed!");
        }
        redirectAttributes.addFlashAttribute("message","Successful operation!");

        return "redirect:/admin/types";
    }

    @GetMapping("types/{id}/delete")
    public String delete(@PathVariable Long id,RedirectAttributes redirectAttributes) {
        typeService.deleteType(id);
        redirectAttributes.addFlashAttribute("message","Successful operation!");
        return "redirect:/admin/types";
    }



}
